@Blatherskite: I am withholding the £1,000 that are still outstanding. I have contacted a mini garage close to me but they have not responded or picked up the phone. I will now try to get an appointment with someone from the AA to advise me. It has passed its MOT recently though and now it is not idling correctly any more and I feel like I have taken on an impossible task. 
@Ben_O: Thank you for the advice. I have amended my pdf to say that these points need to be checked by an independent garage. I definitely am being made to feel like I have unrealistic expectations and should expect this level of work when dealing with an old car. The thing is, this was not the first car I saw and bought. I had been to see quite a few minis and chose this one because it drove so well and had a low mileage with history. He promised to get the car to look like really good and sturdy when finished and I believed that.
@Titchywitch: Thank you! I will definitely give them a call. Maybe they can check out the points that I am not able to check. :)
@eean: You speak from my heart. :)
@Carlos W: I have sent you a pm.
I have a few things to report since I have last posted so apologies for this being a very long post once again.
I have been contacting the garage quite often to get a response to my report and have received the following:
GARAGE
'Further to our discussions on Thursday 2 July when I delivered your car to you, I have taken time to reflect on what was said, prior to responding to you. You made it crystal clear you were not happy with the finished result, from my part I will add that I feel your expectations of a car designed over 50 years ago and manufactured over 20 years ago are some what unrealistic, but that aside I want to resolve this matter amicably. I note you have spoken to the Citizens Advice Bureau, and agree we need to talk. The best course of action is to return the car to us and give us the opportunity to rectify any agreed faults in a realistic time frame. Please suggest a date and time to return the car to us.'
MY RESPONSE
'We also had time to reflect since you have brought us the car.
We have gotten some advice in a mini forum and the feedback generally was that the work has been done to poor standards.
I don't expect a 20 year old car to look like a new-build but I do expect you to carry your work out with due diligence to the standards agreed which means that all items need to be fit for purpose and of satisfactory quality.
It is clear that the car in its current state is not.
The car is very dirty and we have found quite a few holes and rust in the base.
Please find attached an overview of queries and feedback on the works carried out which I would like you to respond to point by point.
What do you deem as a reasonable time frame to remedy all defects as listed?
The car has also started giving us issues when idling and we have only driven it twice for 15-20 minutes.'
This is when I sent my report to him. It took a few days for him to get back to us and I have also sent him a couple of texts to ask when a response will be sent.
He then sent us an e-mail and forgot to attach the response.
However, I have received it now including the following response:
GARAGE
'Please find attached your PDF that I have commented in red.
I suggest you return the car to our workshop, so we can go through all the issues your are highlighting. This way we can have other Minis around to show you how parts are fitted and manufactured, this will remove further possibilities of confusion.
Some of your comments are a realistic expectations which I have agreed to address. When can you return the car to us?'
I have attached the PDF with the comments from the garage added in red to my report here also so you can see it.
He hasn't responded to quite a few points which I have made and also not to the really important ones like holes in in the metal underneath the carpet where the sills should have been replaced or the blistering paint on the roof or the door not being aligned etc:
MY RESPONSE (via text, not email)
'We have read your email and have noticed that you haven't made a comment on quite a few points we have made. Please have a look again. Thank you.'
GARAGE
'In response to your text highlighting certain points that remain uncommented, As I wrote yesterday, the car must be returned to our workshop so we can discuss all points in a conciliatory manner.
You included a picture that contained the rear swing arm pin that has a round hole in the casting, this is in fact how it was manufactured to allow a tool to be fitted to facilitate tightening. The cut outs in the roof trim are factory standard to allow water to drain through the roof holes, the red boot liner you showed is a liner not a carpet.
Thus the only way we can resolve further misunderstandings is having the car in our workshop with you both present, only at this juncture can we compile a list of what is realistic and agree any reasonable faults which we are more than happy to correct, some of which I have already agreed to do.
Again, please suggest a date that is convenient.'
I have not responded as of yet as I feel quite drained and don't know what to do. There is no point in myself being present in a garage as I am not a mechanic. I have seen a sufficient amount of Minis to know that my car does not look right!
I am really worried now because of the issue with the idling and have only driven it twice for 15 minutes since it has been delivered to me.
Now one of the front tyres looks like its loosing air too. I feel like I have made a big mistake buying my little car. 
Edited by -Mini-23-, 18 July 2015 - 10:03 AM.